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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Depository for semen during insemination. where urine leaves the body
Follical Stimulating in males
Culls bulls earlier (2 reasons)
vagina
van deferens
2. 2 month growth cycle. stored in the epididymis of the bull
age and castration
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
scrotum
Sperm growth rate
3. Actual heat cycle (period)
estrus
mare ovulation
rectal palpation (BSE)
sow estrus cycle
4. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
testis (gonads)
dairy cattle pregnancy check
elastrator
monestrous
5. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
leydid or interstitial cells
Sperm survival specs
reason for seasonal breeding periods
van deferens
6. Allows extension of penis without fibro-elastic penis
sigmoid flexure
reason for seasonal breeding periods
Lutinizing Hormone in females
penis proper
7. Milk ~305 days - dry 60 days prior to calving
spermatogenesis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
Dairy Cattle milking schedule
Lutinizing Hormone in males
8. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
behavioral signs of estrus
libido test (BSE)
Holstein Cow
scrotum
9. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
Sperm survival specs
effects of BST
behavioral signs of estrus
penis sizes vs delivering methods
10. 26 hours after estrus begins
ewe ovulation
sow ovulation
sow ovulation
Follical Stimulating in females
11. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
effects of BST
sow ovulation
why does the cow need fat deposits during pregnancy?
~1 month
12. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
#1 cost in production
cryptorchid
dartos muscle
13. Duct through penis that carries sperm and urine
pelvis
scrotal circumference (BSE)
Lutinizing Hormone in females
urethra
14. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
reasons for castration
sow estrus cycle
Hormones from both the fetus and the mom.
cow ovulation
15. 1-2 days
ewe estrus
urethra
Sperm growth rate
Hormones from both the fetus and the mom.
16. Depository for semen during insemination. where urine leaves the body
seasonally polyestrous
ewe estrus cycle
cow gestation
vagina
17. Why Dairy calves are fed powdered milk.
prostate gland
1. more cost effective - 2. powdered milk is in excess production
seasonally polyestrous
Culls bulls earlier (2 reasons)
18. 19-23 (21) days
Avg. bull specs
seasonally polyestrous
humans: stress level vs sperm
cow estrus cycle
19. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
6-8 weeks
retractor muscles
mare's estrous cycle
sow estrus
20. (male) pushes the testes outward toward the legs for a cool-down off of the body
cremaster muscle
testis (gonads)
things to check for in a breeding soundness exam (BSE)
effects of BST
21. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
what has to happen for males for copulation to occur
functions of progestrone
normal presentation of the fetus
22. Microscopic - make sure not sterile - very few bulls are actually tested
spermatogenesis
sperm cell
things to check for in a breeding soundness exam (BSE)
semen evaluation (BSE)
23. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
eminal vesicles
normal presentation of the fetus
growth lost from castration methods (knife & band)
prostate gland
24. 30-38 hours after estrus cycle begins
sow ovulation
reason for seasonal breeding periods
mare estrus cycle
cryptorchid
25. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
vulva
Jersey Cow
functions of progestrone
reasons for castration
26. 10-37 (21) days
mare estrus cycle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
eminal vesicles
ewe estrus cycle
27. 30 hours after estrus begins
Culls bulls earlier (2 reasons)
sertoli cells
seasonally polyestrous
cow ovulation
28. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)
why does the cow need fat deposits during pregnancy?
dartos muscle
kidney stones also called ________ ___________ can develop in the sigmoid flexure
feeding a high producing dairy cow
29. What about the sperm for a bull which has been castrated but still has testicles?
Follical Stimulating in females
estrous
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
semen evaluation (BSE)
30. What about the sperm for a bull which has been castrated but still has testicles?
Culls bulls earlier (2 reasons)
sow gestation
organs used in spermatogenesis
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
31. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
eminal vesicles
Brown Swiss Cow
#1 cost in production
Mares
32. Failure to have one testis (gonad) to descend
prostate gland
what has to happen for males for copulation to occur
monorchid
Follical Stimulating in males
33. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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34. Important 'landmark' during palpation
cervix
sigmoid flexure
feeding a high producing dairy cow
burdizzo
35. (FSH) causes egg to mature in females
Brown Swiss Cow
hypothalamus and pituitary gland
mare gestation
Follical Stimulating in females
36. Sperm production
epididymis: definition - 3 parts - 4 functions
spermatogenesis
Avg. bull specs
Reasons for gestation length being affected
37. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
feeding a high producing dairy cow
semen evaluation (BSE)
humans: stress level vs sperm
scrotal circumference (BSE)
38. (male) pushes the testes upward toward the body for warmth or protection
cowper's gland
dartos muscle
hormones
Dairy calves are removed from cow at birth to...
39. What makes the milk flow through the mammary glands?
Blood
Sperm growth rate
sow gestation
why does the cow need fat deposits during pregnancy?
40. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
eminal vesicles
mare gestation
Lutinizing Hormone in females
rectal palpation (BSE)
41. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
penis sizes vs delivering methods
mare ovulation
things to check for in a breeding soundness exam (BSE)
42. Not under a timeline - cow can not be sold as steak
#1 cost in production
van deferens
epididymis: definition - 3 parts - 4 functions
Grading choice
43. 1-3 days
mare estrus cycle
sow estrus
penis proper
vulva
44. 10-37 (21) days
Follical Stimulating in females
mare estrus cycle
ewe gestation
polyestrous
45. FEED
elastrator
seasonally polyestrous
uterus
#1 cost in production
46. 265-285 days
Dairy Cattle Gestation
epididymis: definition - 3 parts - 4 functions
age and castration
behavioral signs of estrus
47. Milk is 15% ________ and 85% __________.
dry matter and water
cow estrus
Reasons for gestation length being affected
visual evaluation (BSE)
48. Allows extension of penis without fibro-elastic penis
Where livelihood is in agriculture
cremaster muscle
sigmoid flexure
retractor muscles
49. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
sperm cell
scrotal circumference (BSE)
Where livelihood is in agriculture
Hard
50. Prevent the cow from getting an infection from the calve
Dairy calves are removed from cow at birth to...
prostate gland
reasons for castration
dartos muscle